Product Description
Toyota TO 00591-04739-81-A polyurethane load wheel assembly engineered for electric pallet jack applications. Features 3.25 inch diameter by 4.5 inch hub length with 95A durometer Durarun polyurethane tread and sealed precision bearings. Complete assembly designed for Toyota Material Handling electric walkie pallet jack load wheel positions.
Specifications
Material & Construction
| Wheel Core Material | Machined steel |
| Tread Material | Durarun polyurethane |
| Tread Hardness | 95A durometer (Shore scale) |
| Finish | Polyurethane tread bonded to machined steel core |
| Bearing Type | Sealed precision bearings, pre-lubricated |
Dimensions
| Wheel Diameter | 3.25 inch |
| Hub Length | 4.5 inch |
Part Information
| Direct Replacement Part Number | TO 00591-04739-81-A |
| Manufacturer Part Number | 00591-04739-81-A |
| Cross-Reference Part Numbers | Replaces TO 00591-04739-81, equivalent to 591-04739-81, supersedes TY00591-04739-81-A |
| Application | Toyota Material Handling electric walkie pallet jack load wheel assembly, model 7HBW23 |
| Assembly Type | Complete assembly with sealed bearings and steel core |
Frequently Asked Questions
Q: What is the complete specification for the TO 00591-04739-81-A wheel assembly?
A: The TO 00591-04739-81-A is a complete polyurethane load wheel assembly with 3.25 inch diameter, 4.5 inch hub length, and 95A durometer Durarun polyurethane tread. It includes sealed precision bearings and a machined steel wheel core for Toyota electric pallet jack load wheel applications.
Q: Which Toyota electric pallet jack models does this wheel fit?
A: The TO 00591-04739-81-A is engineered for Toyota Material Handling electric walkie pallet jack load wheel positions, including model 7HBW23. Verify your specific model and wheel mounting bore against this specification before ordering.
Q: What does 95A durometer polyurethane mean?
A: Durometer measures polyurethane hardness. 95A is a medium-hard compound designed for load-bearing and wear resistance on typical warehouse floors. It provides durability for continuous-duty pallet jack operation without being too rigid or too soft.
Q: Are the bearings sealed and maintenance-free?
A: Yes, the TO 00591-04739-81-A features sealed precision bearings that are pre-lubricated and maintenance-free under normal operating conditions. Sealed bearings prevent dirt and moisture ingress, extending wheel life in typical warehouse environments.
Q: What is the cross-reference for this part?
A: The TO 00591-04739-81-A replaces and supersedes the older TO 00591-04739-81 single wheel and is equivalent to 591-04739-81 and TY00591-04739-81-A. Verify dimensions match your equipment before confirming fitment.
Q: How long will this wheel assembly last?
A: Wheel assembly lifespan depends on load, floor type, speed, and maintenance. Sealed bearings typically last 3-5 years in normal warehouse duty. Replace the assembly when polyurethane tread is worn smooth, flat-spotted, or cracked, or when bearing play becomes audible or visible.